Concentric golf ball marker



FIG. 1 is a top perspective view of a concentric golf ball marker;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top perspective view of a second embodiment of the concentric golf ball marker as disclosed in FIG. 1;

FIG. 4 is a top perspective view of a third embodiment of the concentric golf ball marker as disclosed in FIG. 1;

FIG. 5 is a top perspective view of a fourth embodiment of the concentric golf ball marker as disclosed in FIG. 1; and

FIG. 6 is a top perspective view of a fifth embodiment of the concentric golf ball marker as disclosed in FIG. 1 . 

The ornamental design for a concentric golf ball marker, as shown and described. 